2006-02-10 17:44:05 +00:00
<?xml version="1.0" encoding="utf-8"?>
2005-12-24 18:00:21 +00:00
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
2001-06-06 20:07:01 +00:00
2005-12-24 18:00:21 +00:00
< html xmlns = "http://www.w3.org/1999/xhtml" xml:lang = "en" >
2001-06-06 20:07:01 +00:00
< head >
2006-02-10 17:44:05 +00:00
< meta http-equiv = "content-type" content = "application/xml+xhtml; charset=utf-8" / >
2003-12-30 13:33:51 +00:00
< title > Logtalk control construct: ::/1< / title >
2005-12-24 18:00:21 +00:00
< link rel = "stylesheet" href = "../../screen.css" type = "text/css" media = "screen" / >
< link rel = "stylesheet" href = "../../print.css" type = "text/css" media = "print" / >
2001-06-06 20:07:01 +00:00
< / head >
< body >
2005-12-24 18:00:21 +00:00
< div class = "top-left" > Logtalk reference manual< / div >
< div class = "top-right" > Control construct: ::/1< / div >
< div class = "bottom-left" > < span class = "page" / > < / div >
< div class = "bottom-right" > < span class = "page" / > < / div >
< div class = "navtop" > < a href = "../../index.html" > contents< / a > > < a href = "../index.html" > reference manual< / a > > < a href = "../index.html#constructs" > control constructs< / a > < / div >
2003-12-30 13:33:51 +00:00
2007-06-12 10:39:47 +00:00
< h2 id = "control_to_self1" class = "codenp" > ::/1< / h2 >
2001-06-06 20:07:01 +00:00
< h4 > Description< / h4 >
2003-12-30 13:33:51 +00:00
< pre > ::Predicate
2001-06-06 20:07:01 +00:00
::(Predicate1, Predicate2, ...)
2003-12-30 13:33:51 +00:00
::(Predicate1; Predicate2; ...)< / pre >
2001-06-06 20:07:01 +00:00
< p >
2004-07-08 23:48:59 +00:00
Send a message to < a class = "glossary" title = "Go to glossary definition" href = "../../glossary.html#self" > self< / a > . Only used in the body of a predicate definition. The argument should match a public or protected predicate of < a class = "glossary" title = "Go to glossary definition" href = "../../glossary.html#self" > self< / a > . It may also match a private predicate if the predicate is within the scope of the object where the method making the call is defined, if imported from a category, if used from inside a category, or when using private inheritance. We can also send a set of messages to self. The "< code > ,< / code > " and "< code > ;< / code > " in the list have the usual Prolog meaning.
2001-06-06 20:07:01 +00:00
< / p >
< h4 > Template and modes< / h4 >
2003-12-30 13:33:51 +00:00
< pre > ::+messages< / pre >
2001-06-06 20:07:01 +00:00
2001-12-05 23:57:48 +00:00
< h4 > Errors< / h4 >
2001-06-06 20:07:01 +00:00
2006-11-07 17:11:47 +00:00
< dl >
2005-12-24 18:00:21 +00:00
< dt > Predicate is a variable:< / dt >
< dd > < code > instantiation_error< / code > < / dd >
< dt > Predicate is declared private:< / dt >
< dd > < code > permission_error(access, private_predicate, Predicate)< / code > < / dd >
< dt > Predicate is not declared:< / dt >
< dd > < code > existence_error(predicate_declaration, Predicate)< / code > < / dd >
< / dl >
2001-06-06 20:07:01 +00:00
< h4 > Examples< / h4 >
2003-12-30 13:33:51 +00:00
< pre > area(Area) :-
2001-06-06 20:07:01 +00:00
::width(Width),
::height(Height),
2003-12-30 13:33:51 +00:00
Area is Width*Height.< / pre >
2001-06-06 20:07:01 +00:00
2003-12-30 13:33:51 +00:00
< div class = "footer" >
2006-11-07 17:11:47 +00:00
< div class = "copyright" >
< span > Copyright © < a href = "mailto:pmoura@logtalk.org" > Paulo Moura< / a > — < a href = "http://logtalk.org" > Logtalk.org< / a > < / span > < br / >
< span > Last updated on: October 26, 2006< / span >
< / div >
< div class = "navbottom" >
< span > < a href = "to_object2.html" > previous< / a > | < a href = "../../glossary.html" > glossary< / a > | < a href = "to_super1.html" > next< / a > < / span > < br / >
< span > < a href = "http://validator.w3.org/check/referer" > XHTML< / a > + < a href = "http://jigsaw.w3.org/css-validator/check/referer" > CSS< / a > < / span >
2005-12-24 18:00:21 +00:00
< / div >
2003-12-30 13:33:51 +00:00
< / div >
2005-12-24 18:00:21 +00:00
2003-12-30 13:33:51 +00:00
< / body >
2006-11-07 17:11:47 +00:00
2001-06-06 20:07:01 +00:00
< / html >
